Comment by DaanDeMeyer

You don't have to build ParticleOS images on the machine itself, it's perfectly possible to build them offline somewhere else and download them from the target machine when doing an update with systemd-sysupdate. It's just that we haven't quite gotten to ironing out all the details there. We're adding support to OBS (OpenSUSE Build System) to build ParticleOS images and will eventually start publishing prebuilt images there which can then be consumed by systemd-sysupdate.

For the embedded space you'd just build the ParticleOS images on your own build system, publish them somewhere and consume them with systemd-sysupdate, doesn't have to be OBS of course.

But we don't do stuff like only downloading diffs with systemd-sysupdate and such yet, so your milleage may vary.